Solar greenhouse occupies a large proportion of greenhouse types in China and is the most widely used agricultural facility in northern China. The application of solar greenhouse in agriculture is mainly to cultivate fruits, vegetables and flowers, and the bottom surface of greenhouse is mainly rectangular. So in this paper, based on regular hexagon, a greenhouse with hexagonal structure is designed, and a miniature model is constructed according to the scale. Then select some reasonable components and install them inside the structure for temperature test. By measuring the temperature inside the greenhouse at a fixed point, the temperature change inside the greenhouse in a day is obtained. Through the analysis of the longitudinal temperature comparison and the horizontal temperature field inside the greenhouse, the rationality of the structure model is verified.